</head>
<body>
<table>
<th>Check</th>
<th>Absender</th>
<th>Betreff</th>
<th>Vorschau</th>
<th>Opt</th>
<tr>
<td>
<input type="checkbox">
</td>
<td>
</td>
<td>
</td>
<td>
</td>
<td>
<button>&Ouml;ffnen</button>
</td>
</tr>

</table>

</body>

</html